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Finding the Fourth Proportional to 14,347.71, 21,516.71 and 4,985.28

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Solution

The fourth proportional to 14,347.71, 21,516.71 and 4,985.28 is: 7,476.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,347.71 : 21,516.71 = 4,985.28 : x
  2. Step 2: Convert to fraction form
    14,347.71/21,516.71 = 4,985.28/x
  3. Step 3: Cross multiply
    14,347.71x = 21,516.71 × 4,985.28
  4. Step 4: Simplify right side
    14,347.71x = 107,266,799.10
  5. Step 5: Solve for x
    x = 107,266,799.10/14,347.71
  6. Step 6: Final answer
    x = 7,476.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.